The cause of Tinea pedis: It is due to the invasion of the toe by the epidermis, Trichophyton rubrum or Trichophyton foot. Trichophyton rubrum is resistant and not easy to control, and it binds with the body qi and fluids. Gathering but not dispersing, resulting in dry and moist skin is caused. Tinea pedis is caused by thick keratin layer, lack of sebum, rich sweat glands, more sweating, and moist feet, which are conducive to the growth and reproduction of mycobacteria, and it is also easy to infect each other when using public baths, public slippers, footbaths, and towels. Clinical symptoms of tinea pedis: 1. Blistering: It occurs mostly in the summer and is characterized by the appearance of rice-grain-sized, deep blisters between the toes, on the edges of the feet, and on the soles of the feet, which are scattered or distributed in groups, with thick walls and clear content and do not easily rupture. After a few days of dry desquamation, fused with each other to form multi-room blisters, tear off the wall, visible honeycomb base and bright red erosion surface, intense itching. 2, vesicular: manifested as local epidermal cuticle softening and whitening. Due to walking constantly rubbing epidermis off, revealing bright red vesicles; severe cases between the toe seam, toe belly and plantar junction skin can be involved, intense itching, mostly in 3.4.5 toe seam between. Common in sweaty people. 3, scaly keratosis type: symptoms are plantar, foot edge, heel skin toe thickening, roughness, flaking, scales into flakes or small dots, repeatedly shed. In winter, cracks occur between the skin of the toes, and in summer, blisters are produced, with pain.